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|
/* $Id: SUPDrv-darwin.cpp $ */
/** @file
* VirtualBox Support Driver - Darwin Specific Code.
*/
/*
* Copyright (C) 2006-2012 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#define LOG_GROUP LOG_GROUP_SUP_DRV
/*
* Deal with conflicts first.
* PVM - BSD mess, that FreeBSD has correct a long time ago.
* iprt/types.h before sys/param.h - prevents UINT32_C and friends.
*/
#include <iprt/types.h>
#include <sys/param.h>
#undef PVM
#include <IOKit/IOLib.h> /* Assert as function */
#include "../SUPDrvInternal.h"
#include <VBox/version.h>
#include <iprt/asm.h>
#include <iprt/asm-amd64-x86.h>
#include <iprt/initterm.h>
#include <iprt/assert.h>
#include <iprt/spinlock.h>
#include <iprt/semaphore.h>
#include <iprt/process.h>
#include <iprt/alloc.h>
#include <iprt/power.h>
#include <iprt/dbg.h>
#include <VBox/err.h>
#include <VBox/log.h>
#include <mach/kmod.h>
#include <miscfs/devfs/devfs.h>
#include <sys/conf.h>
#include <sys/errno.h>
#include <sys/ioccom.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/kauth.h>
#include <IOKit/IOService.h>
#include <IOKit/IOUserClient.h>
#include <IOKit/pwr_mgt/RootDomain.h>
#include <IOKit/IODeviceTreeSupport.h>
#include <IOKit/usb/IOUSBHIDDriver.h>
#include <IOKit/bluetooth/IOBluetoothHIDDriver.h>
#include <IOKit/bluetooth/IOBluetoothHIDDriverTypes.h>
#ifdef VBOX_WITH_HOST_VMX
# include <libkern/version.h>
RT_C_DECLS_BEGIN
# include <i386/vmx.h>
RT_C_DECLS_END
#endif
/*******************************************************************************
* Defined Constants And Macros *
*******************************************************************************/
/** The system device node name. */
#define DEVICE_NAME_SYS "vboxdrv"
/** The user device node name. */
#define DEVICE_NAME_USR "vboxdrvu"
/*******************************************************************************
* Internal Functions *
*******************************************************************************/
RT_C_DECLS_BEGIN
static kern_return_t VBoxDrvDarwinStart(struct kmod_info *pKModInfo, void *pvData);
static kern_return_t VBoxDrvDarwinStop(struct kmod_info *pKModInfo, void *pvData);
static int VBoxDrvDarwinOpen(dev_t Dev, int fFlags, int fDevType, struct proc *pProcess);
static int VBoxDrvDarwinClose(dev_t Dev, int fFlags, int fDevType, struct proc *pProcess);
static int VBoxDrvDarwinIOCtl(dev_t Dev, u_long iCmd, caddr_t pData, int fFlags, struct proc *pProcess);
static int VBoxDrvDarwinIOCtlSlow(PSUPDRVSESSION pSession, u_long iCmd, caddr_t pData, struct proc *pProcess);
static int VBoxDrvDarwinErr2DarwinErr(int rc);
static IOReturn VBoxDrvDarwinSleepHandler(void *pvTarget, void *pvRefCon, UInt32 uMessageType, IOService *pProvider, void *pvMessageArgument, vm_size_t argSize);
RT_C_DECLS_END
static void vboxdrvDarwinResolveSymbols(void);
/*******************************************************************************
* Structures and Typedefs *
*******************************************************************************/
/**
* The service class.
* This is just a formality really.
*/
class org_virtualbox_SupDrv : public IOService
{
OSDeclareDefaultStructors(org_virtualbox_SupDrv);
public:
virtual bool init(OSDictionary *pDictionary = 0);
virtual void free(void);
virtual bool start(IOService *pProvider);
virtual void stop(IOService *pProvider);
virtual IOService *probe(IOService *pProvider, SInt32 *pi32Score);
virtual bool terminate(IOOptionBits fOptions);
};
OSDefineMetaClassAndStructors(org_virtualbox_SupDrv, IOService);
/**
* An attempt at getting that clientDied() notification.
* I don't think it'll work as I cannot figure out where/what creates the correct
* port right.
*/
class org_virtualbox_SupDrvClient : public IOUserClient
{
OSDeclareDefaultStructors(org_virtualbox_SupDrvClient);
private:
PSUPDRVSESSION m_pSession; /**< The session. */
task_t m_Task; /**< The client task. */
org_virtualbox_SupDrv *m_pProvider; /**< The service provider. */
public:
virtual bool initWithTask(task_t OwningTask, void *pvSecurityId, UInt32 u32Type);
virtual bool start(IOService *pProvider);
static void sessionClose(RTPROCESS Process);
virtual IOReturn clientClose(void);
virtual IOReturn clientDied(void);
virtual bool terminate(IOOptionBits fOptions = 0);
virtual bool finalize(IOOptionBits fOptions);
virtual void stop(IOService *pProvider);
};
OSDefineMetaClassAndStructors(org_virtualbox_SupDrvClient, IOUserClient);
/*******************************************************************************
* Global Variables *
*******************************************************************************/
/**
* Declare the module stuff.
*/
RT_C_DECLS_BEGIN
extern kern_return_t _start(struct kmod_info *pKModInfo, void *pvData);
extern kern_return_t _stop(struct kmod_info *pKModInfo, void *pvData);
KMOD_EXPLICIT_DECL(VBoxDrv, VBOX_VERSION_STRING, _start, _stop)
DECLHIDDEN(kmod_start_func_t *) _realmain = VBoxDrvDarwinStart;
DECLHIDDEN(kmod_stop_func_t *) _antimain = VBoxDrvDarwinStop;
DECLHIDDEN(int) _kext_apple_cc = __APPLE_CC__;
RT_C_DECLS_END
/**
* Device extention & session data association structure.
*/
static SUPDRVDEVEXT g_DevExt;
/**
* The character device switch table for the driver.
*/
static struct cdevsw g_DevCW =
{
/** @todo g++ doesn't like this syntax - it worked with gcc before renaming to .cpp. */
/*.d_open = */VBoxDrvDarwinOpen,
/*.d_close = */VBoxDrvDarwinClose,
/*.d_read = */eno_rdwrt,
/*.d_write = */eno_rdwrt,
/*.d_ioctl = */VBoxDrvDarwinIOCtl,
/*.d_stop = */eno_stop,
/*.d_reset = */eno_reset,
/*.d_ttys = */NULL,
/*.d_select= */eno_select,
/*.d_mmap = */eno_mmap,
/*.d_strategy = */eno_strat,
/*.d_getc = */eno_getc,
/*.d_putc = */eno_putc,
/*.d_type = */0
};
/** Major device number. */
static int g_iMajorDeviceNo = -1;
/** Registered devfs device handle for the system device. */
static void *g_hDevFsDeviceSys = NULL;
/** Registered devfs device handle for the user device. */
static void *g_hDevFsDeviceUsr = NULL;
/** Spinlock protecting g_apSessionHashTab. */
static RTSPINLOCK g_Spinlock = NIL_RTSPINLOCK;
/** Hash table */
static PSUPDRVSESSION g_apSessionHashTab[19];
/** Calculates the index into g_apSessionHashTab.*/
#define SESSION_HASH(pid) ((pid) % RT_ELEMENTS(g_apSessionHashTab))
/** The number of open sessions. */
static int32_t volatile g_cSessions = 0;
/** The notifier handle for the sleep callback handler. */
static IONotifier *g_pSleepNotifier = NULL;
/** Pointer to vmx_suspend(). */
static PFNRT g_pfnVmxSuspend = NULL;
/** Pointer to vmx_resume(). */
static PFNRT g_pfnVmxResume = NULL;
/** Pointer to vmx_use_count. */
static int volatile *g_pVmxUseCount = NULL;
/**
* Start the kernel module.
*/
static kern_return_t VBoxDrvDarwinStart(struct kmod_info *pKModInfo, void *pvData)
{
int rc;
#ifdef DEBUG
printf("VBoxDrvDarwinStart\n");
#endif
/*
* Initialize IPRT.
*/
rc = RTR0Init(0);
if (RT_SUCCESS(rc))
{
/*
* Initialize the device extension.
*/
rc = supdrvInitDevExt(&g_DevExt, sizeof(SUPDRVSESSION));
if (RT_SUCCESS(rc))
{
/*
* Initialize the session hash table.
*/
memset(g_apSessionHashTab, 0, sizeof(g_apSessionHashTab)); /* paranoia */
rc = RTSpinlockCreate(&g_Spinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "VBoxDrvDarwin");
if (RT_SUCCESS(rc))
{
/*
* Registering ourselves as a character device.
*/
g_iMajorDeviceNo = cdevsw_add(-1, &g_DevCW);
if (g_iMajorDeviceNo >= 0)
{
#ifdef VBOX_WITH_HARDENING
g_hDevFsDeviceSys = devfs_make_node(makedev(g_iMajorDeviceNo, 0), DEVFS_CHAR,
UID_ROOT, GID_WHEEL, 0600, DEVICE_NAME_SYS);
#else
g_hDevFsDeviceSys = devfs_make_node(makedev(g_iMajorDeviceNo, 0), DEVFS_CHAR,
UID_ROOT, GID_WHEEL, 0666, DEVICE_NAME_SYS);
#endif
if (g_hDevFsDeviceSys)
{
g_hDevFsDeviceUsr = devfs_make_node(makedev(g_iMajorDeviceNo, 1), DEVFS_CHAR,
UID_ROOT, GID_WHEEL, 0666, DEVICE_NAME_USR);
if (g_hDevFsDeviceUsr)
{
LogRel(("VBoxDrv: version " VBOX_VERSION_STRING " r%d; IOCtl version %#x; IDC version %#x; dev major=%d\n",
VBOX_SVN_REV, SUPDRV_IOC_VERSION, SUPDRV_IDC_VERSION, g_iMajorDeviceNo));
/* Register a sleep/wakeup notification callback */
g_pSleepNotifier = registerPrioritySleepWakeInterest(&VBoxDrvDarwinSleepHandler, &g_DevExt, NULL);
if (g_pSleepNotifier == NULL)
LogRel(("VBoxDrv: register for sleep/wakeup events failed\n"));
/* Find kernel symbols that are kind of optional. */
vboxdrvDarwinResolveSymbols();
return KMOD_RETURN_SUCCESS;
}
LogRel(("VBoxDrv: devfs_make_node(makedev(%d,1),,,,%s) failed\n", g_iMajorDeviceNo, DEVICE_NAME_USR));
devfs_remove(g_hDevFsDeviceSys);
g_hDevFsDeviceSys = NULL;
}
else
LogRel(("VBoxDrv: devfs_make_node(makedev(%d,0),,,,%s) failed\n", g_iMajorDeviceNo, DEVICE_NAME_SYS));
cdevsw_remove(g_iMajorDeviceNo, &g_DevCW);
g_iMajorDeviceNo = -1;
}
else
LogRel(("VBoxDrv: cdevsw_add failed (%d)\n", g_iMajorDeviceNo));
RTSpinlockDestroy(g_Spinlock);
g_Spinlock = NIL_RTSPINLOCK;
}
else
LogRel(("VBoxDrv: RTSpinlockCreate failed (rc=%d)\n", rc));
supdrvDeleteDevExt(&g_DevExt);
}
else
printf("VBoxDrv: failed to initialize device extension (rc=%d)\n", rc);
RTR0TermForced();
}
else
printf("VBoxDrv: failed to initialize IPRT (rc=%d)\n", rc);
memset(&g_DevExt, 0, sizeof(g_DevExt));
return KMOD_RETURN_FAILURE;
}
/**
* Resolves kernel symbols we want (but may do without).
*/
static void vboxdrvDarwinResolveSymbols(void)
{
RTDBGKRNLINFO hKrnlInfo;
int rc = RTR0DbgKrnlInfoOpen(&hKrnlInfo, 0);
if (RT_SUCCESS(rc))
{
/* The VMX stuff. */
int rc1 = RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "vmx_resume", (void **)&g_pfnVmxResume);
int rc2 = RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "vmx_suspend", (void **)&g_pfnVmxSuspend);
int rc3 = RTR0DbgKrnlInfoQuerySymbol(hKrnlInfo, NULL, "vmx_use_count", (void **)&g_pVmxUseCount);
if (RT_SUCCESS(rc1) && RT_SUCCESS(rc2) && RT_SUCCESS(rc3))
{
LogRel(("VBoxDrv: vmx_resume=%p vmx_suspend=%p vmx_use_count=%p (%d) cr4=%#x\n",
g_pfnVmxResume, g_pfnVmxSuspend, g_pVmxUseCount, *g_pVmxUseCount, ASMGetCR4() ));
}
else
{
LogRel(("VBoxDrv: failed to resolve vmx stuff: vmx_resume=%Rrc vmx_suspend=%Rrc vmx_use_count=%Rrc", rc1, rc2, rc3));
g_pfnVmxResume = NULL;
g_pfnVmxSuspend = NULL;
g_pVmxUseCount = NULL;
}
RTR0DbgKrnlInfoRelease(hKrnlInfo);
}
else
LogRel(("VBoxDrv: Failed to open kernel symbols, rc=%Rrc\n", rc));
}
/**
* Stop the kernel module.
*/
static kern_return_t VBoxDrvDarwinStop(struct kmod_info *pKModInfo, void *pvData)
{
int rc;
LogFlow(("VBoxDrvDarwinStop\n"));
/** @todo I've got a nagging feeling that we'll have to keep track of users and refuse
* unloading if we're busy. Investigate and implement this! */
/*
* Undo the work done during start (in reverse order).
*/
if (g_pSleepNotifier)
{
g_pSleepNotifier->remove();
g_pSleepNotifier = NULL;
}
devfs_remove(g_hDevFsDeviceUsr);
g_hDevFsDeviceUsr = NULL;
devfs_remove(g_hDevFsDeviceSys);
g_hDevFsDeviceSys = NULL;
rc = cdevsw_remove(g_iMajorDeviceNo, &g_DevCW);
Assert(rc == g_iMajorDeviceNo);
g_iMajorDeviceNo = -1;
supdrvDeleteDevExt(&g_DevExt);
rc = RTSpinlockDestroy(g_Spinlock);
AssertRC(rc);
g_Spinlock = NIL_RTSPINLOCK;
RTR0TermForced();
memset(&g_DevExt, 0, sizeof(g_DevExt));
#ifdef DEBUG
printf("VBoxDrvDarwinStop - done\n");
#endif
return KMOD_RETURN_SUCCESS;
}
/**
* Device open. Called on open /dev/vboxdrv
*
* @param Dev The device number.
* @param fFlags ???.
* @param fDevType ???.
* @param pProcess The process issuing this request.
*/
static int VBoxDrvDarwinOpen(dev_t Dev, int fFlags, int fDevType, struct proc *pProcess)
{
#ifdef DEBUG_DARWIN_GIP
char szName[128];
szName[0] = '\0';
proc_name(proc_pid(pProcess), szName, sizeof(szName));
Log(("VBoxDrvDarwinOpen: pid=%d '%s'\n", proc_pid(pProcess), szName));
#endif
/*
* Only two minor devices numbers are allowed.
*/
if (minor(Dev) != 0 && minor(Dev) != 1)
return EACCES;
/*
* Find the session created by org_virtualbox_SupDrvClient, fail
* if no such session, and mark it as opened. We set the uid & gid
* here too, since that is more straight forward at this point.
*/
const bool fUnrestricted = minor(Dev) == 0;
int rc = VINF_SUCCESS;
PSUPDRVSESSION pSession = NULL;
kauth_cred_t pCred = kauth_cred_proc_ref(pProcess);
if (pCred)
{
#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
RTUID Uid = kauth_cred_getruid(pCred);
RTGID Gid = kauth_cred_getrgid(pCred);
#else
RTUID Uid = pCred->cr_ruid;
RTGID Gid = pCred->cr_rgid;
#endif
RTPROCESS Process = RTProcSelf();
unsigned iHash = SESSION_HASH(Process);
RTSpinlockAcquire(g_Spinlock);
pSession = g_apSessionHashTab[iHash];
while (pSession && pSession->Process != Process)
pSession = pSession->pNextHash;
if (pSession)
{
if (!pSession->fOpened)
{
pSession->fOpened = true;
pSession->fUnrestricted = fUnrestricted;
pSession->Uid = Uid;
pSession->Gid = Gid;
}
else
rc = VERR_ALREADY_LOADED;
}
else
rc = VERR_GENERAL_FAILURE;
RTSpinlockReleaseNoInts(g_Spinlock);
#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1050
kauth_cred_unref(&pCred);
#else /* 10.4 */
/* The 10.4u SDK headers and 10.4.11 kernel source have inconsistent definitions
of kauth_cred_unref(), so use the other (now deprecated) API for releasing it. */
kauth_cred_rele(pCred);
#endif /* 10.4 */
}
else
rc = VERR_INVALID_PARAMETER;
#ifdef DEBUG_DARWIN_GIP
OSDBGPRINT(("VBoxDrvDarwinOpen: pid=%d '%s' pSession=%p rc=%d\n", proc_pid(pProcess), szName, pSession, rc));
#else
Log(("VBoxDrvDarwinOpen: g_DevExt=%p pSession=%p rc=%d pid=%d\n", &g_DevExt, pSession, rc, proc_pid(pProcess)));
#endif
return VBoxDrvDarwinErr2DarwinErr(rc);
}
/**
* Close device.
*/
static int VBoxDrvDarwinClose(dev_t Dev, int fFlags, int fDevType, struct proc *pProcess)
{
Log(("VBoxDrvDarwinClose: pid=%d\n", (int)RTProcSelf()));
Assert(proc_pid(pProcess) == (int)RTProcSelf());
/*
* Hand the session closing to org_virtualbox_SupDrvClient.
*/
org_virtualbox_SupDrvClient::sessionClose(RTProcSelf());
return 0;
}
/**
* Device I/O Control entry point.
*
* @returns Darwin for slow IOCtls and VBox status code for the fast ones.
* @param Dev The device number (major+minor).
* @param iCmd The IOCtl command.
* @param pData Pointer to the data (if any it's a SUPDRVIOCTLDATA (kernel copy)).
* @param fFlags Flag saying we're a character device (like we didn't know already).
* @param pProcess The process issuing this request.
*/
static int VBoxDrvDarwinIOCtl(dev_t Dev, u_long iCmd, caddr_t pData, int fFlags, struct proc *pProcess)
{
const bool fUnrestricted = minor(Dev) == 0;
const RTPROCESS Process = proc_pid(pProcess);
const unsigned iHash = SESSION_HASH(Process);
PSUPDRVSESSION pSession;
/*
* Find the session.
*/
RTSpinlockAcquire(g_Spinlock);
pSession = g_apSessionHashTab[iHash];
while (pSession && pSession->Process != Process && pSession->fUnrestricted == fUnrestricted && pSession->fOpened)
pSession = pSession->pNextHash;
if (RT_LIKELY(pSession))
supdrvSessionRetain(pSession);
RTSpinlockReleaseNoInts(g_Spinlock);
if (!pSession)
{
OSDBGPRINT(("VBoxDrvDarwinIOCtl: WHAT?!? pSession == NULL! This must be a mistake... pid=%d iCmd=%#lx\n",
(int)Process, iCmd));
return EINVAL;
}
/*
* Deal with the two high-speed IOCtl that takes it's arguments from
* the session and iCmd, and only returns a VBox status code.
*/
int rc;
if ( ( iCmd == SUP_IOCTL_FAST_DO_RAW_RUN
|| iCmd == SUP_IOCTL_FAST_DO_HM_RUN
|| iCmd == SUP_IOCTL_FAST_DO_NOP)
&& fUnrestricted)
rc = supdrvIOCtlFast(iCmd, *(uint32_t *)pData, &g_DevExt, pSession);
else
rc = VBoxDrvDarwinIOCtlSlow(pSession, iCmd, pData, pProcess);
supdrvSessionRelease(pSession);
return rc;
}
/**
* Worker for VBoxDrvDarwinIOCtl that takes the slow IOCtl functions.
*
* @returns Darwin errno.
*
* @param pSession The session.
* @param iCmd The IOCtl command.
* @param pData Pointer to the kernel copy of the SUPDRVIOCTLDATA buffer.
* @param pProcess The calling process.
*/
static int VBoxDrvDarwinIOCtlSlow(PSUPDRVSESSION pSession, u_long iCmd, caddr_t pData, struct proc *pProcess)
{
LogFlow(("VBoxDrvDarwinIOCtlSlow: pSession=%p iCmd=%p pData=%p pProcess=%p\n", pSession, iCmd, pData, pProcess));
/*
* Buffered or unbuffered?
*/
PSUPREQHDR pHdr;
user_addr_t pUser = 0;
void *pvPageBuf = NULL;
uint32_t cbReq = IOCPARM_LEN(iCmd);
if ((IOC_DIRMASK & iCmd) == IOC_INOUT)
{
pHdr = (PSUPREQHDR)pData;
if (RT_UNLIKELY(cbReq < sizeof(*pHdr)))
{
OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: cbReq=%#x < %#x; iCmd=%#lx\n", cbReq, (int)sizeof(*pHdr), iCmd));
return EINVAL;
}
if (RT_UNLIKELY((pHdr->fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) != SUPREQHDR_FLAGS_MAGIC))
{
OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: bad magic fFlags=%#x; iCmd=%#lx\n", pHdr->fFlags, iCmd));
return EINVAL;
}
if (RT_UNLIKELY( RT_MAX(pHdr->cbIn, pHdr->cbOut) != cbReq
|| pHdr->cbIn < sizeof(*pHdr)
|| pHdr->cbOut < sizeof(*pHdr)))
{
OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: max(%#x,%#x) != %#x; iCmd=%#lx\n", pHdr->cbIn, pHdr->cbOut, cbReq, iCmd));
return EINVAL;
}
}
else if ((IOC_DIRMASK & iCmd) == IOC_VOID && !cbReq)
{
/*
* Get the header and figure out how much we're gonna have to read.
*/
SUPREQHDR Hdr;
pUser = (user_addr_t)*(void **)pData;
int rc = copyin(pUser, &Hdr, sizeof(Hdr));
if (RT_UNLIKELY(rc))
{
OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: copyin(%llx,Hdr,) -> %#x; iCmd=%#lx\n", (unsigned long long)pUser, rc, iCmd));
return rc;
}
if (RT_UNLIKELY((Hdr.fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) != SUPREQHDR_FLAGS_MAGIC))
{
OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: bad magic fFlags=%#x; iCmd=%#lx\n", Hdr.fFlags, iCmd));
return EINVAL;
}
cbReq = RT_MAX(Hdr.cbIn, Hdr.cbOut);
if (RT_UNLIKELY( Hdr.cbIn < sizeof(Hdr)
|| Hdr.cbOut < sizeof(Hdr)
|| cbReq > _1M*16))
{
OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: max(%#x,%#x); iCmd=%#lx\n", Hdr.cbIn, Hdr.cbOut, iCmd));
return EINVAL;
}
/*
* Allocate buffer and copy in the data.
*/
pHdr = (PSUPREQHDR)RTMemTmpAlloc(cbReq);
if (!pHdr)
pvPageBuf = pHdr = (PSUPREQHDR)IOMallocAligned(RT_ALIGN_Z(cbReq, PAGE_SIZE), 8);
if (RT_UNLIKELY(!pHdr))
{
OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: failed to allocate buffer of %d bytes; iCmd=%#lx\n", cbReq, iCmd));
return ENOMEM;
}
rc = copyin(pUser, pHdr, Hdr.cbIn);
if (RT_UNLIKELY(rc))
{
OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: copyin(%llx,%p,%#x) -> %#x; iCmd=%#lx\n",
(unsigned long long)pUser, pHdr, Hdr.cbIn, rc, iCmd));
if (pvPageBuf)
IOFreeAligned(pvPageBuf, RT_ALIGN_Z(cbReq, PAGE_SIZE));
else
RTMemTmpFree(pHdr);
return rc;
}
}
else
{
Log(("VBoxDrvDarwinIOCtlSlow: huh? cbReq=%#x iCmd=%#lx\n", cbReq, iCmd));
return EINVAL;
}
/*
* Process the IOCtl.
*/
int rc = supdrvIOCtl(iCmd, &g_DevExt, pSession, pHdr);
if (RT_LIKELY(!rc))
{
/*
* If not buffered, copy back the buffer before returning.
*/
if (pUser)
{
uint32_t cbOut = pHdr->cbOut;
if (cbOut > cbReq)
{
OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: too much output! %#x > %#x; uCmd=%#lx!\n", cbOut, cbReq, iCmd));
cbOut = cbReq;
}
rc = copyout(pHdr, pUser, cbOut);
if (RT_UNLIKELY(rc))
OSDBGPRINT(("VBoxDrvDarwinIOCtlSlow: copyout(%p,%llx,%#x) -> %d; uCmd=%#lx!\n",
pHdr, (unsigned long long)pUser, cbOut, rc, iCmd));
/* cleanup */
if (pvPageBuf)
IOFreeAligned(pvPageBuf, RT_ALIGN_Z(cbReq, PAGE_SIZE));
else
RTMemTmpFree(pHdr);
}
}
else
{
/*
* The request failed, just clean up.
*/
if (pUser)
{
if (pvPageBuf)
IOFreeAligned(pvPageBuf, RT_ALIGN_Z(cbReq, PAGE_SIZE));
else
RTMemTmpFree(pHdr);
}
Log(("VBoxDrvDarwinIOCtlSlow: pid=%d iCmd=%lx pData=%p failed, rc=%d\n", proc_pid(pProcess), iCmd, (void *)pData, rc));
rc = EINVAL;
}
Log2(("VBoxDrvDarwinIOCtlSlow: returns %d\n", rc));
return rc;
}
/**
* The SUPDRV IDC entry point.
*
* @returns VBox status code, see supdrvIDC.
* @param iReq The request code.
* @param pReq The request.
*/
DECLEXPORT(int) VBOXCALL SUPDrvDarwinIDC(uint32_t uReq, PSUPDRVIDCREQHDR pReq)
{
PSUPDRVSESSION pSession;
/*
* Some quick validations.
*/
if (RT_UNLIKELY(!VALID_PTR(pReq)))
return VERR_INVALID_POINTER;
pSession = pReq->pSession;
if (pSession)
{
if (RT_UNLIKELY(!VALID_PTR(pSession)))
return VERR_INVALID_PARAMETER;
if (RT_UNLIKELY(pSession->pDevExt != &g_DevExt))
return VERR_INVALID_PARAMETER;
}
else if (RT_UNLIKELY(uReq != SUPDRV_IDC_REQ_CONNECT))
return VERR_INVALID_PARAMETER;
/*
* Do the job.
*/
return supdrvIDC(uReq, &g_DevExt, pSession, pReq);
}
/**
* Initializes any OS specific object creator fields.
*/
void VBOXCALL supdrvOSObjInitCreator(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession)
{
NOREF(pObj);
NOREF(pSession);
}
/**
* Checks if the session can access the object.
*
* @returns true if a decision has been made.
* @returns false if the default access policy should be applied.
*
* @param pObj The object in question.
* @param pSession The session wanting to access the object.
* @param pszObjName The object name, can be NULL.
* @param prc Where to store the result when returning true.
*/
bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char *pszObjName, int *prc)
{
NOREF(pObj);
NOREF(pSession);
NOREF(pszObjName);
NOREF(prc);
return false;
}
/**
* Callback for blah blah blah.
*/
IOReturn VBoxDrvDarwinSleepHandler(void * /* pvTarget */, void *pvRefCon, UInt32 uMessageType, IOService * /* pProvider */, void * /* pvMessageArgument */, vm_size_t /* argSize */)
{
LogFlow(("VBoxDrv: Got sleep/wake notice. Message type was %X\n", (uint)uMessageType));
if (uMessageType == kIOMessageSystemWillSleep)
RTPowerSignalEvent(RTPOWEREVENT_SUSPEND);
else if (uMessageType == kIOMessageSystemHasPoweredOn)
RTPowerSignalEvent(RTPOWEREVENT_RESUME);
acknowledgeSleepWakeNotification(pvRefCon);
return 0;
}
/**
* @copydoc SUPR0EnableVTx
*/
int VBOXCALL supdrvOSEnableVTx(bool fEnable)
{
#ifdef VBOX_WITH_HOST_VMX
int rc;
if ( version_major >= 10 /* 10 = 10.6.x = Snow Leopard */
&& g_pfnVmxSuspend
&& g_pfnVmxResume
&& g_pVmxUseCount)
{
if (fEnable)
{
rc = host_vmxon(false /* exclusive */);
if (rc == VMX_OK)
rc = VINF_SUCCESS;
else if (rc == VMX_UNSUPPORTED)
rc = VERR_VMX_NO_VMX;
else if (rc == VMX_INUSE)
rc = VERR_VMX_IN_VMX_ROOT_MODE;
else /* shouldn't happen, but just in case. */
{
LogRel(("host_vmxon returned %d\n", rc));
rc = VERR_UNRESOLVED_ERROR;
}
LogRel(("VBoxDrv: host_vmxon -> vmx_use_count=%d rc=%Rrc\n", *g_pVmxUseCount, rc));
}
else
{
host_vmxoff();
rc = VINF_SUCCESS;
LogRel(("VBoxDrv: host_vmxoff -> vmx_use_count=%d\n", *g_pVmxUseCount));
}
}
else
{
/* In 10.5.x the host_vmxon is severely broken! Don't use it, it will
frequnetly panic the host. */
rc = VERR_NOT_SUPPORTED;
}
return rc;
#else
return VERR_NOT_SUPPORTED;
#endif
}
/**
* @copydoc SUPR0SuspendVTxOnCpu
*/
bool VBOXCALL supdrvOSSuspendVTxOnCpu(void)
{
#ifdef VBOX_WITH_HOST_VMX
/*
* Consult the VMX usage counter, don't try suspend if not enabled.
*
* Note! The host_vmxon/off code is still race prone since, but this is
* currently the best we can do without always enable VMX when
* loading the driver.
*/
if ( g_pVmxUseCount
&& *g_pVmxUseCount > 0)
{
g_pfnVmxSuspend();
return true;
}
return false;
#else
return false;
#endif
}
/**
* @copydoc SUPR0ResumeVTxOnCpu
*/
void VBOXCALL supdrvOSResumeVTxOnCpu(bool fSuspended)
{
#ifdef VBOX_WITH_HOST_VMX
/*
* Don't consult the counter here, the state knows better.
* We're executing with interrupts disabled and anyone racing us with
* disabling VT-x will be waiting in the rendezvous code.
*/
if ( fSuspended
&& g_pfnVmxResume)
g_pfnVmxResume();
else
Assert(!fSuspended);
#else
Assert(!fSuspended);
#endif
}
bool VBOXCALL supdrvOSGetForcedAsyncTscMode(PSUPDRVDEVEXT pDevExt)
{
NOREF(pDevExt);
return false;
}
void VBOXCALL supdrvOSLdrNotifyOpened(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
{
#if 1
NOREF(pDevExt); NOREF(pImage);
#else
/*
* Try store the image load address in NVRAM so we can retrived it on panic.
* Note! This only works if you're root! - Acutally, it doesn't work at all at the moment. FIXME!
*/
IORegistryEntry *pEntry = IORegistryEntry::fromPath("/options", gIODTPlane);
if (pEntry)
{
char szVar[80];
RTStrPrintf(szVar, sizeof(szVar), "vboximage"/*-%s*/, pImage->szName);
char szValue[48];
RTStrPrintf(szValue, sizeof(szValue), "%#llx,%#llx", (uint64_t)(uintptr_t)pImage->pvImage,
(uint64_t)(uintptr_t)pImage->pvImage + pImage->cbImageBits - 1);
bool fRc = pEntry->setProperty(szVar, szValue); NOREF(fRc);
pEntry->release();
SUPR0Printf("fRc=%d '%s'='%s'\n", fRc, szVar, szValue);
}
/*else
SUPR0Printf("failed to find /options in gIODTPlane\n");*/
#endif
}
int VBOXCALL supdrvOSLdrOpen(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const char *pszFilename)
{
NOREF(pDevExt); NOREF(pImage); NOREF(pszFilename);
return VERR_NOT_SUPPORTED;
}
int VBOXCALL supdrvOSLdrValidatePointer(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, void *pv, const uint8_t *pbImageBits)
{
NOREF(pDevExt); NOREF(pImage); NOREF(pv); NOREF(pbImageBits);
return VERR_NOT_SUPPORTED;
}
int VBOXCALL supdrvOSLdrLoad(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const uint8_t *pbImageBits, PSUPLDRLOAD pReq)
{
NOREF(pDevExt); NOREF(pImage); NOREF(pbImageBits); NOREF(pReq);
return VERR_NOT_SUPPORTED;
}
void VBOXCALL supdrvOSLdrUnload(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage)
{
NOREF(pDevExt); NOREF(pImage);
}
/**
* Resume Bluetooth keyboard.
* If there is no Bluetooth keyboard device connected to the system we just ignore this.
*/
static void supdrvDarwinResumeBluetoothKbd(void)
{
OSDictionary *pDictionary = IOService::serviceMatching("AppleBluetoothHIDKeyboard");
if (pDictionary)
{
OSIterator *pIter;
IOBluetoothHIDDriver *pDriver;
pIter = IOService::getMatchingServices(pDictionary);
if (pIter)
{
while ((pDriver = (IOBluetoothHIDDriver *)pIter->getNextObject()))
if (pDriver->isKeyboard())
(void)pDriver->hidControl(IOBTHID_CONTROL_EXIT_SUSPEND);
pIter->release();
}
pDictionary->release();
}
}
/**
* Resume built-in keyboard on MacBook Air and Pro hosts.
* If there is no built-in keyboard device attached to the system we just ignore this.
*/
static void supdrvDarwinResumeBuiltinKbd(void)
{
/*
* AppleUSBTCKeyboard KEXT is responsible for built-in keyboard management.
* We resume keyboard by accessing to its IOService. */
OSDictionary *pDictionary = IOService::serviceMatching("AppleUSBTCKeyboard");
if (pDictionary)
{
OSIterator *pIter;
IOUSBHIDDriver *pDriver;
pIter = IOService::getMatchingServices(pDictionary);
if (pIter)
{
while ((pDriver = (IOUSBHIDDriver *)pIter->getNextObject()))
if (pDriver->IsPortSuspended())
pDriver->SuspendPort(false, 0);
pIter->release();
}
pDictionary->release();
}
}
/**
* Resume suspended keyboard devices (if any).
*/
int VBOXCALL supdrvDarwinResumeSuspendedKbds(void)
{
supdrvDarwinResumeBuiltinKbd();
supdrvDarwinResumeBluetoothKbd();
return 0;
}
/**
* Converts an IPRT error code to a darwin error code.
*
* @returns corresponding darwin error code.
* @param rc IPRT status code.
*/
static int VBoxDrvDarwinErr2DarwinErr(int rc)
{
switch (rc)
{
case VINF_SUCCESS: return 0;
case VERR_GENERAL_FAILURE: return EACCES;
case VERR_INVALID_PARAMETER: return EINVAL;
case VERR_INVALID_MAGIC: return EILSEQ;
case VERR_INVALID_HANDLE: return ENXIO;
case VERR_INVALID_POINTER: return EFAULT;
case VERR_LOCK_FAILED: return ENOLCK;
case VERR_ALREADY_LOADED: return EEXIST;
case VERR_PERMISSION_DENIED: return EPERM;
case VERR_VERSION_MISMATCH: return ENOSYS;
}
return EPERM;
}
RTDECL(int) SUPR0Printf(const char *pszFormat, ...)
{
va_list va;
char szMsg[512];
va_start(va, pszFormat);
RTStrPrintfV(szMsg, sizeof(szMsg) - 1, pszFormat, va);
va_end(va);
szMsg[sizeof(szMsg) - 1] = '\0';
printf("%s", szMsg);
return 0;
}
/*
*
* org_virtualbox_SupDrv
*
*/
/**
* Initialize the object.
*/
bool org_virtualbox_SupDrv::init(OSDictionary *pDictionary)
{
LogFlow(("org_virtualbox_SupDrv::init([%p], %p)\n", this, pDictionary));
if (IOService::init(pDictionary))
{
/* init members. */
return true;
}
return false;
}
/**
* Free the object.
*/
void org_virtualbox_SupDrv::free(void)
{
LogFlow(("IOService::free([%p])\n", this));
IOService::free();
}
/**
* Check if it's ok to start this service.
* It's always ok by us, so it's up to IOService to decide really.
*/
IOService *org_virtualbox_SupDrv::probe(IOService *pProvider, SInt32 *pi32Score)
{
LogFlow(("org_virtualbox_SupDrv::probe([%p])\n", this));
return IOService::probe(pProvider, pi32Score);
}
/**
* Start this service.
*/
bool org_virtualbox_SupDrv::start(IOService *pProvider)
{
LogFlow(("org_virtualbox_SupDrv::start([%p])\n", this));
if (IOService::start(pProvider))
{
/* register the service. */
registerService();
return true;
}
return false;
}
/**
* Stop this service.
*/
void org_virtualbox_SupDrv::stop(IOService *pProvider)
{
LogFlow(("org_virtualbox_SupDrv::stop([%p], %p)\n", this, pProvider));
IOService::stop(pProvider);
}
/**
* Termination request.
*
* @return true if we're ok with shutting down now, false if we're not.
* @param fOptions Flags.
*/
bool org_virtualbox_SupDrv::terminate(IOOptionBits fOptions)
{
bool fRc;
LogFlow(("org_virtualbox_SupDrv::terminate: reference_count=%d g_cSessions=%d (fOptions=%#x)\n",
KMOD_INFO_NAME.reference_count, ASMAtomicUoReadS32(&g_cSessions), fOptions));
if ( KMOD_INFO_NAME.reference_count != 0
|| ASMAtomicUoReadS32(&g_cSessions))
fRc = false;
else
fRc = IOService::terminate(fOptions);
LogFlow(("org_virtualbox_SupDrv::terminate: returns %d\n", fRc));
return fRc;
}
/*
*
* org_virtualbox_SupDrvClient
*
*/
/**
* Initializer called when the client opens the service.
*/
bool org_virtualbox_SupDrvClient::initWithTask(task_t OwningTask, void *pvSecurityId, UInt32 u32Type)
{
LogFlow(("org_virtualbox_SupDrvClient::initWithTask([%p], %#x, %p, %#x) (cur pid=%d proc=%p)\n",
this, OwningTask, pvSecurityId, u32Type, RTProcSelf(), RTR0ProcHandleSelf()));
AssertMsg((RTR0PROCESS)OwningTask == RTR0ProcHandleSelf(), ("%p %p\n", OwningTask, RTR0ProcHandleSelf()));
if (!OwningTask)
return false;
if (IOUserClient::initWithTask(OwningTask, pvSecurityId , u32Type))
{
m_Task = OwningTask;
m_pSession = NULL;
m_pProvider = NULL;
return true;
}
return false;
}
/**
* Start the client service.
*/
bool org_virtualbox_SupDrvClient::start(IOService *pProvider)
{
LogFlow(("org_virtualbox_SupDrvClient::start([%p], %p) (cur pid=%d proc=%p)\n",
this, pProvider, RTProcSelf(), RTR0ProcHandleSelf() ));
AssertMsgReturn((RTR0PROCESS)m_Task == RTR0ProcHandleSelf(),
("%p %p\n", m_Task, RTR0ProcHandleSelf()),
false);
if (IOUserClient::start(pProvider))
{
m_pProvider = OSDynamicCast(org_virtualbox_SupDrv, pProvider);
if (m_pProvider)
{
Assert(!m_pSession);
/*
* Create a new session.
*/
int rc = supdrvCreateSession(&g_DevExt, true /* fUser */, false /*fUnrestricted*/, &m_pSession);
if (RT_SUCCESS(rc))
{
m_pSession->fOpened = false;
/* The Uid, Gid and fUnrestricted fields are set on open. */
/*
* Insert it into the hash table, checking that there isn't
* already one for this process first. (One session per proc!)
*/
unsigned iHash = SESSION_HASH(m_pSession->Process);
RTSpinlockAcquire(g_Spinlock);
PSUPDRVSESSION pCur = g_apSessionHashTab[iHash];
if (pCur && pCur->Process != m_pSession->Process)
{
do pCur = pCur->pNextHash;
while (pCur && pCur->Process != m_pSession->Process);
}
if (!pCur)
{
m_pSession->pNextHash = g_apSessionHashTab[iHash];
g_apSessionHashTab[iHash] = m_pSession;
m_pSession->pvSupDrvClient = this;
ASMAtomicIncS32(&g_cSessions);
rc = VINF_SUCCESS;
}
else
rc = VERR_ALREADY_LOADED;
RTSpinlockReleaseNoInts(g_Spinlock);
if (RT_SUCCESS(rc))
{
Log(("org_virtualbox_SupDrvClient::start: created session %p for pid %d\n", m_pSession, (int)RTProcSelf()));
return true;
}
LogFlow(("org_virtualbox_SupDrvClient::start: already got a session for this process (%p)\n", pCur));
supdrvSessionRelease(m_pSession);
}
m_pSession = NULL;
LogFlow(("org_virtualbox_SupDrvClient::start: rc=%Rrc from supdrvCreateSession\n", rc));
}
else
LogFlow(("org_virtualbox_SupDrvClient::start: %p isn't org_virtualbox_SupDrv\n", pProvider));
}
return false;
}
/**
* Common worker for clientClose and VBoxDrvDarwinClose.
*/
/* static */ void org_virtualbox_SupDrvClient::sessionClose(RTPROCESS Process)
{
/*
* Find the session and remove it from the hash table.
*
* Note! Only one session per process. (Both start() and
* VBoxDrvDarwinOpen makes sure this is so.)
*/
const unsigned iHash = SESSION_HASH(Process);
RTSpinlockAcquire(g_Spinlock);
PSUPDRVSESSION pSession = g_apSessionHashTab[iHash];
if (pSession)
{
if (pSession->Process == Process)
{
g_apSessionHashTab[iHash] = pSession->pNextHash;
pSession->pNextHash = NULL;
ASMAtomicDecS32(&g_cSessions);
}
else
{
PSUPDRVSESSION pPrev = pSession;
pSession = pSession->pNextHash;
while (pSession)
{
if (pSession->Process == Process)
{
pPrev->pNextHash = pSession->pNextHash;
pSession->pNextHash = NULL;
ASMAtomicDecS32(&g_cSessions);
break;
}
/* next */
pPrev = pSession;
pSession = pSession->pNextHash;
}
}
}
RTSpinlockReleaseNoInts(g_Spinlock);
if (!pSession)
{
Log(("SupDrvClient::sessionClose: pSession == NULL, pid=%d; freed already?\n", (int)Process));
return;
}
/*
* Remove it from the client object.
*/
org_virtualbox_SupDrvClient *pThis = (org_virtualbox_SupDrvClient *)pSession->pvSupDrvClient;
pSession->pvSupDrvClient = NULL;
if (pThis)
{
Assert(pThis->m_pSession == pSession);
pThis->m_pSession = NULL;
}
/*
* Close the session.
*/
supdrvSessionRelease(pSession);
}
/**
* Client exits normally.
*/
IOReturn org_virtualbox_SupDrvClient::clientClose(void)
{
LogFlow(("org_virtualbox_SupDrvClient::clientClose([%p]) (cur pid=%d proc=%p)\n", this, RTProcSelf(), RTR0ProcHandleSelf()));
AssertMsg((RTR0PROCESS)m_Task == RTR0ProcHandleSelf(), ("%p %p\n", m_Task, RTR0ProcHandleSelf()));
/*
* Clean up the session if it's still around.
*
* We cannot rely 100% on close, and in the case of a dead client
* we'll end up hanging inside vm_map_remove() if we postpone it.
*/
if (m_pSession)
{
sessionClose(RTProcSelf());
Assert(!m_pSession);
}
m_pProvider = NULL;
terminate();
return kIOReturnSuccess;
}
/**
* The client exits abnormally / forgets to do cleanups. (logging)
*/
IOReturn org_virtualbox_SupDrvClient::clientDied(void)
{
LogFlow(("org_virtualbox_SupDrvClient::clientDied([%p]) m_Task=%p R0Process=%p Process=%d\n",
this, m_Task, RTR0ProcHandleSelf(), RTProcSelf()));
/* IOUserClient::clientDied() calls clientClose, so we'll just do the work there. */
return IOUserClient::clientDied();
}
/**
* Terminate the service (initiate the destruction). (logging)
*/
bool org_virtualbox_SupDrvClient::terminate(IOOptionBits fOptions)
{
LogFlow(("org_virtualbox_SupDrvClient::terminate([%p], %#x)\n", this, fOptions));
return IOUserClient::terminate(fOptions);
}
/**
* The final stage of the client service destruction. (logging)
*/
bool org_virtualbox_SupDrvClient::finalize(IOOptionBits fOptions)
{
LogFlow(("org_virtualbox_SupDrvClient::finalize([%p], %#x)\n", this, fOptions));
return IOUserClient::finalize(fOptions);
}
/**
* Stop the client service. (logging)
*/
void org_virtualbox_SupDrvClient::stop(IOService *pProvider)
{
LogFlow(("org_virtualbox_SupDrvClient::stop([%p])\n", this));
IOUserClient::stop(pProvider);
}
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